KR102239216B1 - Introducer sheath - Google Patents

Abstract

The present invention relates to a medical guide tube, comprising a sheath coupled to a dilator guided by a guide wire for inducing a catheter into a blood vessel of a human body, wherein the sheath is an extension direction of the sheath A sheath hub having a path provided therein to selectively insert or receive the dialer according to the following; The sealing portion disposed inside the cis hub along the path of the cis hub, and the sealing portion of the cis hub to create a locked state by compressing the sealing portion or moving in the opposite direction so as not to compress the sealing portion to create an unlocked state. A push lock having a pusher disposed at the inlet; And a sheath tube made of a flexible material that is connected to the outlet of the sheath hub and extends along the extension direction of the sheath hub so that it can be deformed by adapting to the blood vessel, and a tapered portion may be formed at an end tip of the sheath tube. have.

Description

Medical guide tube{INTRODUCER SHEATH}

The present invention relates to a medical guide tube, and more particularly, a cord-shaped element or a catheter can be inserted into a patient's body so that it can be used quickly and usefully, particularly in the field of medical technology. It relates to a medical guide tube in the form of an assembly capable of guiding to be or reliably guiding the insertion state.

In general, medical guide tubes can be applied to percutaneous coronary intervention (PCI), electrophysiology study (EPS), catheter ablation, and vascular intervention.

In case of vascular intervention such as PCI, EPS, a guiding catheter is inserted through the femoral artery, radial artery, and femoral vein, and a constricted lesion with a balloon catheter, a resection catheter, a rotation catheter, a laser catheter, or a stent using a guide wire. It can mean a procedure to widen and treat.

A catheter refers to a thin tube or ceramic made by extrusion molding using medical materials, and is used for various functions in the medical field.

That is, a catheter is a medical device that is inserted into the human body when handling a bottle or performing an operation. Depending on the material or method of making, it can be applied in various fields such as cardiovascular, urology, gastrointestinal, neurovascular, and ophthalmology.

These catheters can be used with medical introducer sheaths.

The guide tube can be used to insert a catheter into the body of a patient, such as blood vessels.

The induction tube may be configured and designed in an integrated configuration with a proximal end protruding out of the patient's body and a distal end remaining in the patient's body.

That is, the guide tube may be simply inserted through the patient's skin or an orifice of the human body in a sterile state.

Accordingly, when the catheter is inserted into the blood vessel of the patient and when it is withdrawn from the blood vessel, the induction tube can be usefully used.

The medical induction tube according to the prior art can fix a cord-shaped element or a catheter using a screw locking method, and thus, it may cause inconvenience to a user or a patient during an operation or procedure.

In addition, when performing screw rotation for locking or unlocking, it is highly expected that the user can operate the screw with one hand and the state that the user must hold the guide tube with the other at the same time. It is difficult.

In addition, the medical induction tube according to the prior art has a disadvantage that it is very difficult to intuitively and quickly grasp the locking state since the screw tightening amount and the moving state according to the screw rotation cannot be visually confirmed.

Korean Patent Publication No. 10-2015-0102064 (2015.09.04.) Korean Patent Publication No. 10-2003-0004357 (2003.01.14.)

An object of the present invention is to provide a medical induction tube that can conveniently and quickly perform a medical induction tube procedure as a structure capable of one-touch locking by a push method, and since it is possible to reliably maintain a locked state or make a release state quickly. It is done.

According to an aspect of the present invention, in a medical induction tube including a sheath coupled to a dilator guided by a guide wire for inducing a catheter in a blood vessel of a human body, the sheath is A sheath hub having a path provided therein to selectively insert or receive the dialer along the extension direction; The sealing portion disposed inside the cis hub along the path of the cis hub, and the sealing portion of the cis hub to create a locked state by compressing the sealing portion or moving in the opposite direction so as not to compress the sealing portion to create an unlocked state. A push lock having a pusher disposed at the inlet; And a sheath tube made of a flexible material that is connected to the outlet of the sheath hub and extends along the extension direction of the sheath hub so that it can be deformed by adapting to the blood vessel, and a tapered portion is formed at the end tip of the sheath tube. An induction tube can be provided.

In addition, the cis hub, formed integrally on the outer peripheral surface of the outlet of the cis hub, so as to be a support base for a surgical thread for mounting the sheath on the skin of the human body, the sheath ring portion having a ring shape; And connected through the sheath hub along a direction perpendicular to the extension direction of the path of the sheath hub at the outer peripheral surface of the sheath hub spaced apart from the sheath ring part, and the path of the three-way valve side tube and the sheath hub It may include a side tube connection for connecting to each other in space.

In addition, the cis hub may include: a cone-shaped transition chamber portion whose diameter gradually decreases in a direction from the inlet of the cis hub toward the outlet of the cis hub among the paths of the cis hub; And a coating part integrally laminated on the inner surface of the transition chamber part so as to maintain airtightness by contacting the outer surface of the sealing part.

In addition, the sheath hub is a small-diameter chamber that extends along the path of the sheath hub so as to be spatially connected to the upper part of the transition chamber from the inside of the sheath hub, and has the same size as the inner diameter of the sheath tube. part; A large-diameter chamber portion formed to have a relatively large size compared to the small-diameter chamber portion and spacedly connected to a lower portion of the transition chamber portion to accommodate the sealing portion; A locking groove extending along a circumferential direction from an inner circumferential surface of the large-diameter chamber part; And a releasing groove formed on an inner circumferential surface of the large-diameter chamber portion so as to be parallel to the locking groove portion at a spaced position below the locking groove portion.

In addition, the sealing portion of the push lock may be disposed in the transition chamber portion and the large-diameter chamber portion, and a hollow body having an inner diameter of a size capable of penetrating the dialer tube of the dialer, and the hollow body A hemostatic valve disposed separately or integrally formed at the top, a deformable protrusion of a semi-elliptical cross-section extending in a circumferential direction along the outer circumferential surface of the hollow body, and integrally at the lower end of the hollow body located opposite to the hemostasis valve It may include a formed skirt portion.

In addition, the pusher of the push lock is formed to extend along a circumferential direction integrally with a seating space portion receiving the skirt portion or selectively receiving the skirt portion and the deformation protrusion, and the outer peripheral surface of the seating space portion, A locking protrusion having a relatively large rigidity compared to the deformable protrusion, a through hole spatially connected to the seating space and having a diameter capable of penetrating the dialer tube of the dialer, and formed on the inner circumferential surface of the through hole And, it may include a snap ring-shaped stepped portion that can be fastened to the annular coupling groove portion formed in the dialer, and a pressing portion formed on the outer circumferential surface of the pusher to have a diameter relatively larger than the diameter of the locking protrusion.

In addition, the pressing portion of the pusher, in the forward direction toward the sealing portion inside the sheath hub, when the pusher is moved to create a locked state, a smooth bottom surface that serves as a support base for the user's finger, and the pusher When it is moved in the reverse direction to be released, it may include an inclined surface that serves as a support base for the user's finger.

In addition, the pusher may include an indication part formed on the outer surface of the pusher based on the position between the pressing part and the locking protrusion, or formed on the outer surface of the sheath hub, and having a color for each French standard. I can.

In addition, the pressing portion of the pusher may further include a receiving groove portion surrounding the inlet of the sheath hub in a non-contact manner, and a cover portion integrally formed with the pressing portion to form an outer periphery of the receiving groove portion.

The sheath hub further includes a tube support part, which is a hollow pipe structure in a state surrounding a part of the outer circumferential surface of the sheath tube with respect to the outlet of the sheath hub, the tube support part is connected to the outlet of the sheath hub, and the sheath It may have a color different from the color of the tube or a color according to the French standard of the sheath.

In the medical induction tube according to an aspect of the present invention, the sealing portion of the push lock is interlocked with only the operation of the user moving the pusher of the push lock with one touch to reliably maintain the dilator or the catheter during the procedure in a locked state, or , There is an advantage in that the release state can be quickly made only by moving the pusher in the opposite direction so that the pusher can be returned to its original position.

In the medical induction tube according to an aspect of the present invention, since the hemostatic valve and the sealing member to the sealing part are integrally configured or configured separately, the body fluid or blood in the human body is not discharged to the outside of the body through the medical induction tube. There is an advantage to be able to do.

The medical induction tube according to an aspect of the present invention further includes an indication unit for confirming the lock on the pusher of the push lock, so that the user can visually and intuitively check the locked state.

As described above, the medical induction tube according to an aspect of the present invention has the advantage of providing a safer medical induction tube to the medical field by making a lock or unlock state only with a one-touch operation using a user's finger and a push lock.

1 is a perspective view of a medical induction tube according to an embodiment of the present invention.
2 is an exploded perspective view of the medical induction tube shown in FIG. 1.
3 is a cross-sectional view of the sheath shown in FIG. 2.
4 is a cross-sectional view of the sealing portion shown in FIG. 2.
5 is a cross-sectional view of the pusher shown in FIG. 2.
6 is a cross-sectional view showing an assembled state of the sheath, the sealing portion and the pusher shown in FIG. 2.
7 is a cross-sectional view for explaining the principle of operation of the push lock in the assembled state of the sheath, the sealing portion and the pusher shown in FIG. 6.
8 to 11 are cross-sectional views for explaining an operation relationship according to a method of treating a medical induction tube according to an embodiment of the present invention.
12 is a cross-sectional view for explaining a medical induction tube according to an application example of the present invention.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms different from each other, and only these embodiments make the disclosure of the present invention complete, and common knowledge in the technical field to which the present invention pertains. It is provided to fully inform the scope of the invention to those who have it, and the invention is defined by the description of the claims.

Meanwhile, terms used in the present specification are for explaining embodiments and are not intended to limit the present invention. In addition, embodiments may include application examples. In addition, in the present specification, the singular form also includes the plural form unless specifically stated in the phrase. As used herein, "comprises" and/or "comprising" refers to the presence of one or more other components, steps, actions and/or elements in the stated component, step, operation and/or element. It does not preclude adding or adding. Hereinafter, embodiments or applications of the present invention will be described in detail with reference to the accompanying drawings.

In the drawings, FIG. 1 is a perspective view of a medical induction tube according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the medical induction tube shown in FIG. 1.

Referring to FIGS. 1 and 2, the main body 10 as a medical guide tube according to the present embodiment may have a configuration in the form of a device or device or assembly for introducing a catheter sheath.

The main body 10 includes a sheath 100 coupled to a dilator 300 guided by a guide wire 400 for inducing a catheter (not shown) in a blood vessel of the human body. It may be a medical guide tube including.

That is, the main body 10 is a sheath 100, a push lock 200, a dialer 300, a guide wire 400, a three-way valve 500 to facilitate percutaneous entry of the intravascular device. ), may be configured to include a side tube 550 (side tube).

In addition, French numbers 11 and 12 may be engraved on the sheath 100 and the dialer 300 of the main body 10.

French numbers 11 and 12 may satisfy color coding standards.

That is, the sheath 100 and the dialer 300 according to the medical guide tube standard may be manufactured in various sizes or sizes according to a French number or French standard that can be selected for vascular safety. Can provide availability.

For example, the French standard or size may be classified by French number, size (diameter) or color, and may be as shown in [Table 1].

That is, the standard of the main body 10 may be determined to satisfy the size of each French number shown in FIG. 1.

The dialer 300 may be applied or included to be disassembled or combined in an assembly form with respect to this embodiment as a vasodilator, and may be coupled to the sheath 100 or removed from the sheath 100 according to the procedure of the medical induction tube. I can.

The dialer 300 forms a transition to facilitate the placement of a catheter (not shown) to be used in the blood vessel so that the blood vessel is not incapacitated in the subcutaneous tissue, thereby reducing the patient's pain and preventing the patient's disease. Or, it can make it possible to safely proceed with the surgery.

The guide wire 400 is formed such that it can be selectively inserted or separated into a blood vessel through an angiographic needle (not shown) (hereinafter abbreviated as a needle) or can be freely and smoothly bent.

In addition, the guide wire 400 has a flexible end portion, the end portion may be formed in a J tip (J tip) type, can be transformed or changed into a straight shape by a guide wire introducer, etc. not shown. .

In this way, the guide wire 400 is in a state where the needle used before applying the main body 10 of the medical induction tube is removed, the dialer 300 and the sheath 100 assembly (for example, the dialer ( When inserting the assembly in the combined state of 300), see FIG. 8), the dialer 300 and the sheath 100 assembly are guided and approached into the blood vessel, or the dialer 300 and the sheath 100 assembly are inserted. It can play a role in maintaining the status.

3 is a cross-sectional view of the sheath shown in FIG. 2.

2 and 3, the sheath 100 may mean an assembly of the sheath hub 110, the push lock 200, and the sheath tube 130.

The assembly of the sheath hub 110, the push lock 200, and the sheath tube 130 may be formed of medical plastic or synthetic resin material.

The sheath hub 110 may have a path 190 provided therein to selectively insert or receive the dialer 300 along the extending direction of the sheath 100.

The push lock 200 may include a sealing part 250 and a pusher 210.

The sealing part 250 of the push lock 200 is disposed inside the sheath hub 110 along the path 190 of the sheath hub 110 to perform a sealing role, a valve role, and a locking role as will be described later. have.

The pusher 210 of the push lock 200 performs a role of compressing or relaxing the sealing part 250 along the path 190 to make a locked state (see FIG. 10) or not to compress the sealing part 250. It may be disposed at the inlet 111 of the sheath hub 110 so as to move in the opposite direction to create an unlocked state (see FIG. 11 ).

The sheath tube 130 is connected to the outlet 112 of the sheath hub 110 and extends along the extension direction of the sheath hub 110 (eg, the extension direction of the path 190) so that it can be adapted and deformed to the blood vessel. And it may be formed of a flexible material that is relatively superior in variable performance compared to the sheath hub 110 among plastic materials.

In addition, a tapered portion 131 may be formed at the end tip of the sheath tube 130 so as to safely and smoothly pass through the human tissue cut with a scalpel based on the catheter installation site of the skin.

The tapered portion 131 allows the outer circumferential surface of the sheath tube 130 having a relatively large diameter to be naturally inclined to reach the outer circumferential surface of the dialer tube 320 having a relatively small diameter, thereby minimizing damage to human tissues. You can exert the advantages you can do.

To this end, one end tip of the sheath tube 130 is a free end having a tapered portion 131, and the opposite end may be ultrasonically fused to the outlet 112 of the sheath hub 110.

The length of the sheath tube 130 may have a short length corresponding to the medical product standard or a long length to reach the heart or the like.

One end tip 132 of the sheath tube 130 is twisted or bent to correspond to various postures for each standard, as indicated by a dotted line, and has a first stage so that entry can be made easily and smoothly in response to the internal structure of the heart. It may have a shape that extends by bending based on the bending start point or the multi-stage bending start point.

The curved or curved shape of the sheath tube 130 may be defined in various three-dimensional angular coordinate systems, and may not be limited to a specific value because it may be formed suitable for catheterization.

In addition, the sheath hub 110 may include a sheath ring part 120, a side tube connection part 150, and a tube support part 140.

Here, the sheath ring 120 may be formed integrally with the outer circumferential surface of the outlet 112 of the sheath hub 110 and protrude from the outer circumferential surface of the outlet 112.

In addition, the sheath ring portion 120 may have a ring shape so as to be a support base for a surgical thread (not shown) for mounting the sheath 100 on the skin of the human body.

The side tube connection part 150 may be integrally formed on the outer circumferential surface of the sheath hub based on a position spaced apart from the sheath ring part 120.

The inner space of the side tube connection part 150 may be connected through the inner space of the small-diameter chamber part 115 of the sheath hub 110 to be described later.

In addition, the side tube connector 150 is connected to pass through the sheath hub 110 along a direction perpendicular to the extending direction of the path 190 of the sheath hub 110, so that the side tube 550 for the three-way valve 500 And the path 190 of the cis hub 110 or the small-diameter chamber 115 may be connected to each other in space.

In addition, a corrugated groove portion 114 is further formed on the outer surface of the sheath hub 110 between the side tube connection portion 150 and the sheath ring portion 120, thereby increasing the flexibility performance of the sheath tube 130 The advantage of preventing damage to the connection point between the sheath tube 130 and the sheath hub 110 due to repeated loads can be exhibited.

The small-diameter chamber part 115 may be blocked or opened by the hemostatic valve 251 of the sealing part 250 to be described later.

Here, the hemostatic valve 251 is disposed in the transition chamber 113 between the small-diameter chamber part 115 and the large-diameter chamber part 116 when referring to FIG. 6, and thus flows through the sheath tube 130. There is an advantage that it can be effectively prevented from flowing back toward the inlet 111 of the sheath as much as possible in the body liquid (eg, blood).

In addition, the tube support 140 may be a hollow tube structure in a state where a part of the outer peripheral surface of the sheath tube 130 is wrapped with respect to the outlet 112 of the sheath hub 110.

At this time, the tube support 140 is connected to the outlet 112 of the sheath hub 110 (eg, double injection or fusion bonding after assembly), and a color different from or above the color of the sheath tube 130 (eg, white). It can have colors (eg, color) according to the French standard of the sheath mentioned in [Table 1] of [Table 1].

The color of the tube support 140 may have the same color as the lock confirmation indication unit 217 of the pusher 210 to be described later, and thus, there is an advantage in that the locking status and the French standard check can be performed at the same time.

In response to the locked or unlocked state of the pusher 210, the indication unit 217 for confirming the lock of the pusher 210 is expressed (eg, in the unlocked state) to be visible with the naked eye, or It enters into the large-diameter chamber part 116 and is hidden or covered (for example, in a locked state), and through this, the user can intuitively recognize the locked state and the unlocked state.

For example, the indication part 217 according to an embodiment is formed on the outer surface of the pusher 210 based on the position between the pressing part 218 and the locking protrusion 215 shown in FIG. ) Can have color for each standard.

In addition, as will be described later, the indication unit 217 according to the application example illustrated in FIG. 12 may be formed on the outer surface of the sheath hub 110 and may be hidden or exposed according to the movement of the pusher 210.

In addition, the cis hub 110 is a cone-shaped transition chamber portion 113 whose diameter gradually decreases along the direction from the inlet 111 of the cis hub 110 toward the outlet of the cis hub 112 among its paths 190. ).

The space shape of the transition chamber 113 is formed so that it can be combined in shape, that is, combined in shape corresponding to the shape of the hemostatic valve 251 of the sealing part 250 to be described later and the surrounding area thereof.

Due to such a mating state or the spatial shape of the transition chamber part 113, the sealing part 250 simultaneously performs the role of the hemostasis valve 251 and the locking role, thereby simplifying the internal structure of the sheath hub 110. It can provide an advantage.

In addition, in order to exhibit excellent sealing performance or blood blocking performance, the sheath hub 110 may include a coating unit 160 capable of maintaining airtightness by contacting the outer surface of the sealing unit 250.

The coating unit 160 is formed of a viscoelastic material or medical silicone material that is not harmful to the human body, and may be integrally stacked on the inner surface of the transition chamber unit 113.

In addition, the cis hub 110 includes the aforementioned small-diameter chamber part 115 and the large-diameter chamber part 116, and the locking groove part 117 for efficient locking or unlocking operation of the push lock 200 It may include a releasing groove (118).

First, the small-diameter chamber part 115 extends along the path 190 of the sheath hub 110 so that it is spatially connected to the upper part of the transition chamber part 113 inside the sheath hub 110, and the sheath It may be formed to have the same size as the inner diameter of the tube 130.

The large-diameter chamber part 116 is formed to have a relatively large size compared to the small-diameter chamber part 115 and may be connected to the lower part of the transition chamber part 113 to accommodate the sealing part 250 so as to penetrate through space.

The locking groove 117 is formed to extend in a circumferential direction along the inner circumferential surface of the large-diameter chamber 116 of the cis hub 110 based on a position relatively far from the inlet 111 of the cis hub 110.

The locking groove 117 pushes the deformable protrusion 253 of the sealing part 250, which will be described later, when the pusher 210 advances (e.g., moves in the direction entering the inlet 11 of the push hub 110). ), while pushing in the radial direction of the sealing part 250 perpendicular to the movement direction of the pusher 210, the locking protrusion 215 of the pusher 210 is shaped to fit or fit, thereby temporarily or selectively maintaining the locked state Can be in charge of.

The releasing groove part 118 is spaced downward from the locking groove part 117 and is parallel, and the large-diameter chamber part 116 of the sheath hub 110 based on a position relatively close to the inlet 111 of the sheath hub 110 ) Is also formed to extend in the circumferential direction along the inner circumferential surface.

When the releasing groove portion 118 moves backward (for example, the movement in the direction outgoing from the inlet 11 of the push hub 110), the deformable protrusion 253 of the sealing portion 250 is originally caused by the elastic force. It can be restored to the shape, and as the resultant force of the elastic force of the deformable protrusion 253 and the moving force of the pusher 210 is transmitted to the pusher 210, the locking protrusion 215 of the pusher 210 By accommodating in the same manner, it can play a role of temporarily maintaining the released state.

4 is a cross-sectional view of the sealing portion shown in FIG. 2, and FIG. 5 is a cross-sectional view of the pusher shown in FIG. 2.

Referring to FIG. 4, the sealing part 250 may be disposed in the transition chamber part 113 and the large-diameter chamber part 116 of the sheath hub 110 described in detail above, and the diator tube ( It includes a hollow body 252 having an inner diameter of a size capable of penetrating 320).

Here, the hollow body 252 may be formed of a medical silicone material or a medical valve material having elasticity.

The sealing part 250 may include a hemostatic valve 251 integrally formed on the upper part of the hollow body 252.

In addition, the sealing part 250 may include a hemostatic valve 251 that may be disposed in a separate type as shown in FIG. 12 according to a modified design of the sheath hub 110.

The hemostatic valve 251 serves to open the incision line portion of the hemostatic valve 251 while receiving an elastic force through penetration of an object of the dialer 300, the guide wire 400, or the catheter, and the object exits the deployment line portion. When the incision line is in close contact with each other by the elastic force can play a role of closing. This role may refer to the aforementioned valve role.

In addition, the sealing portion 250 may include the deformable protrusion 253 and the skirt portion 254 integrally.

The deformable protrusion 253 may have a semi-elliptical cross section extending in a circumferential direction along the outer circumferential surface of the hollow body 252.

The deformable protrusion 253 and its upper and lower portions are deformed as being pushed inward of the sealing portion 250 according to the movement of the pusher 210 (eg, advance), or the pusher 210 receiving the external force of the user's finger It may play a role of restoring to the outside of the sealing part 250 according to the movement to return to the original position (eg, backward). That is, this role may mean the aforementioned locking role.

The skirt part 254 is formed so that the wall thickness of the skirt part 254 gradually decreases toward the opposite end based on the location where the hemostatic valve 251 is located.

This skirt portion 254 acts as a compression spring when squeezed by the bottom stepped surface of the seating space portion 214 of the pusher 210 to be described later, that is, pushes the pusher 210 to its original position or downward, or upwards the hemostasis valve ( Pushing up the 251 may play a role of in close contact with the coating unit 160. This role may refer to the aforementioned sealing role.

To this end, the skirt part 254 may be integrally formed at the lower end of the hollow body 252 located on the opposite side with respect to the hemostatic valve 251.

Referring to Figure 5, the pusher 210 is formed at the end of the seating space portion 214, which is formed at the end facing the sealing portion 250, and the outer side of the sheath hub 110 is formed at the opposite end of the seating space portion 214 A pressing portion 218 disposed on the side and receiving a one-touch operation according to a user's finger manipulation, a locking protrusion 215, a through hole 216, and a stepped portion 211 may be included.

The seating space part 214 may mean a hole formed along the extension direction of the pusher 210 at the end of the pusher 210 and a wall around the hole.

The wall thickness of the seating space part 214 may be determined within a range that can be fitted in a state that maintains a fine clearance between the outer circumferential surface of the sealing part 250 and the inner circumferential surface of the large-diameter chamber part 116 of the sheath 110. And may not be limited to a specific value.

This seating space portion 214 is formed to accommodate the skirt portion 254 described above, or to selectively accommodate the skirt portion 254 and the deformation protrusion 253.

In this case, the inner circumferential surface of the wall of the seating space 214 may be a pressing surface that presses the deformable protrusion 253 corresponding to the movement of the pusher 210.

The locking protrusion 215 is integrally formed on the outer circumferential surface of the seating space 214 to extend along the circumferential direction, and has a cross-section corresponding to the locking groove 117 or the releasing groove 118.

At this time, the locking protrusion 215 and the surrounding area have relatively greater rigidity than the deformable protrusion 253, but the material is the same as the material of the pusher 210, so that it may have sufficient rigidity to bring about bending deformation. The seating space part 214 itself becomes a buffer space capable of allowing bending deformation of the locking protrusion 215 and its surrounding area, as a result of which the locking groove part 117 of the sheath hub 110 or releasing The groove portion 118 may be selectively and shapely incorporated, that is, molded.

The through hole 216 is spatially connected to the seating space 214 based on the center of the bottom stepped surface of the seating space 214, and at this time, the dialer tube 320 of the dialer 300 can be penetrated. It may have a diameter of any size.

The through hole 216 may be disposed along a center line in the vertical direction in FIG. 5 of the pusher 210.

The stepped portion 211 is formed on the lower inner circumferential surface of the through hole 216 and has a snap ring shape so that it can be fastened with the annular coupling groove 310 formed in the dialer 300 as shown in FIG. 3 or 8. Is formed.

The pressing portion 218 is formed on the outer peripheral surface of the lower portion of the pusher 210 so as to have a relatively larger diameter than the diameter of the locking protrusion 215.

In this case, the pressing part 218 may include a bottom surface 212 and an inclined surface 213.

The bottom surface 212 of the pressing part 218 is in the forward direction toward the sealing part 250 inside the sheath hub 110, when the pusher 210 is moved to create the previously described locking state, the support base of the user's finger It may be formed in a smooth shape so as to be.

The inclined surface 213 of the pressing unit 218 is formed on the opposite side of the bottom surface 212, that is, on the upper side, and can be a support base for the user's finger when the pusher 210 is moved in the backward direction to be released. .

In addition, the pusher 210 is formed on the outer surface of the pusher 210 based on the position between the pressing portion 218 and the locking protrusion 215, and an indication portion 217 having a color for each French standard. It may include.

Hereinafter, a relationship between the assembly and operation of the medical induction tube according to the present embodiment will be described.

6 is a cross-sectional view showing the assembled state of the sheath, the sealing part and the pusher shown in FIG. 2, and FIG. 7 is a sectional view illustrating the operation principle of the push lock in the assembled state of the sheath, the sealing part, and the pusher shown in FIG. 6 This is a cross-sectional view.

Referring to FIG. 6, first, the sealing part 250 of the push lock 200 is disposed in the transition chamber part 113 of the sheath hub 110 of the sheath 100.

Then, the pusher 210 is fastened or assembled to the sheath 100 through the inlet 111 of the sheath hub 110.

According to this assembly, the locking protrusion 215 of the pusher 210 may be located in the releasing groove portion 118.

Referring to FIG. 6, during the locking operation, the user pushes the pusher 210 toward the sheath hub 210 with a finger to move (eg, advance).

In this case, the locking protrusion 215 of the pusher 210 may be positioned in the locking groove 117 by leaving the releasing groove 118 to become a locked state as shown in FIG. 7.

At this time, the deformation protrusion 253 of the sealing part 250 is deformed as being pushed out of the sealing part 250 due to the locking protrusion 215 according to the movement of the pusher 210 (eg, advance), The deformed state may generate a locked state by acting on an adhesion force to an object (eg, a dialer tube or a catheter) to be disposed in the inner space 255 of the sealing part 250.

On the contrary, in the state of FIG. 7 to 6, during the release operation, the user pushes the pusher 210 to the opposite side (eg, downward) of the sheath hub 210 with a finger (eg, moves backward).

In this case, the locking protrusion 215 of the pusher 210 may be located in the releasing groove 118 by leaving the locking groove 117.

At this time, the deformable protrusion 253 of the sealing part 250 returns to its original state, and as a result, the inner circumferential surface of the inner space 255 of the sealing part 250 and the object (for example, a dialer tube or catheter) does not contact each other. You can change it to an unlocked state by creating a gap that is not enough.

8 to 11 are cross-sectional views illustrating an operation relationship according to a method of treating a medical induction tube according to an embodiment of the present invention.

Referring to FIG. 8, first, a user removes air from the body 10 by performing a process of washing with physiological saline from which heparin has been removed or an appropriate isotonic solution.

The user inserts the dialer 300 through the hollow body 252 and the hemostasis valve 251 provided in the sealing part 250 based on the inner position of the sheath 100.

At this time, the annular coupling groove 310 of the dialer 300 is fastened to the stepped portion 211 of the snap ring shape of the pusher 210.

The dialer 300, the sheath 100, and the push lock 200 are coupled to each other.

Even at this time, the user may wash the dialer 300, the sheath 100, and the push lock 200 with physiological saline from which heparin has been removed or an appropriate isotonic solution.

The user uses an aseptic technique to insert an unillustrated hollow tube portion of the needle into the blood vessel.

With the needle in place, the user enters the flexible end of the guide wire 400 into the blood vessel through the needle.

In this process, since the end of the guide wire 400 having the J-tip is inserted into the needle in a straight shape by hand or by a separate guide wire introducer (not shown), the end of the guide wire 400 It can be gently advanced into the blood vessel through a silver needle.

Before inserting the dialer tube 320 and the sheath tube 130 in a superimposed state as an assembly of the dialer 300 and the sheath 100, while holding the guide wire 400 in place, the needle Pull it out and apply pressure to the perforated area of the body.

Referring to FIG. 9, the user mounts the assembly of the dialer 300 and the sheath 100 to the opposite end of the guide wire 400.

The user holds the sheath 100 near the skin to prevent buckling.

The user performs the fitting movement and rotation movement together, and advances the dialer 300 and the sheath 100 assembly toward the blood vessel through the human tissue.

That is, the guide wire 400 guides the forward movement of the dialer 300 and the sheath 100 assembly into the blood vessel.

At this time, in order to prevent damage to the tapered portion 131 of the end tip of the sheath tube 130, it is necessary not to pull out the dialer 300 until the sheath tube 130 enters the blood vessel.

To this end, as shown in FIG. 10, the user contacts the bottom surface 212 of the pusher 210 of the push lock 200 with a finger and moves it toward the sheath hub 110.

In this case, a part of the pusher 210 enters the inside of the sheath hub 110 and compresses and deforms the sealing part 250, and with this, the locking protrusion 215 of the pusher 210 is the locking groove 117 Is located in

Due to the compression and deformation of the sealing portion 250, the diameter of the inner space 255 of the sealing portion 250 is reduced, and the inner circumferential surface of the inner space 255 is in close contact with the dialer tube 320 of the dialer 300 Can be locked.

At this time, the indication unit 217 may be hidden by entering into the inlet 111 of the cis hub 110.

Referring back to FIG. 9, the user moves the pusher 210 of the push lock 200 backward with a finger.

In this case, the pusher 210 is in its original position.

The original position of the pusher 210 can restore the shape of the sealing part 250 inside the sheath hub 110, and the locking protrusion 215 of the pusher 210 is also located in the releasing groove 118 By being, it makes the state of release.

In addition, the indication unit 217 is expressed outside the inlet 111 of the cis hub 110.

Referring to FIG. 11, the user separates the annular coupling groove 310 of the dialer 300 from the stepped portion 211 of the pusher 210 to separate the dialer 300 from the sheath 100, and The guide wire 400 is pulled out from the dialer 300.

The user performs air intake from the side port expansion device to remove potential air. Air suction or cleaning is performed through the three-way valve 500 and the side tube 550 of FIG. 2. At this time, the addition and washing of physiological saline from which heparin has been removed or an appropriate isotonic solution may help prevent the formation of blood clots.

Thereafter, a catheter, not shown, may be introduced into the blood vessel through the sheath 100.

12 is a cross-sectional view for explaining a medical induction tube according to an application example of the present invention.

Referring to FIG. 12, the medical induction tube according to the application example is the same or very similar to the above-described configuration, except for the characteristic points of the pusher 210a and the sealing part 250a, when compared with the above-described contents, overlapping each other. Contents may be omitted in the following description.

The pusher 210a of the push lock 200 according to the application example may have a pressing portion 218 that can protect the edge portion of the inlet 111 of the sheath hub 110.

For example, the pressing portion 218 is formed integrally with the receiving groove 220 surrounding the inlet 111 of the sheath hub 110 in a non-contact manner, and the pressing portion 218 to form an outer periphery of the receiving groove 220 , It may further include a cover portion 230 having a protective cap shape extending by a predetermined length toward the outlet 112 of the sheath hub 110.

In this case, the indication unit 217 according to the application example is formed on the outer surface of the sheath hub 110 based on the point where the end of the cover unit 230 is located on the basis of the released state, and the tube support unit ( 140) may have the same color for each French standard.

In addition, the sealing portion 250a according to the application example is separated from the upper portion of the hollow body 252 and has a hemostatic valve 251 installed in the sheath hub 110.

Here, since the hemostatic valve 251 according to the application example can be supported and fixed to the valve installation portion 119 of the sheath hub 110, relatively excellent sealing performance and valve operation can be secured.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains, various modifications and variations can be made without departing from the essential characteristics of the present invention. Therefore, the embodiments expressed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed by the following claims, and all technical ideas equivalent to or within the scope should be construed as being included in the scope of the present invention.

10: main body 100: sheath
110: sishub 111: entrance
112: outlet 113: transition chamber part
114: wrinkle groove 115: small diameter chamber portion
116: large diameter chamber part 117: locking groove
118: releasing groove 119: valve installation part
120: sheath ring portion 130: sheath tube
131: tapered portion 140: tube support portion
150: side tube connection 160: coating
200: push lock 210, 210a: pusher
215: locking protrusion 250, 250a: sealing part
300: dilator 400: guide wire
500: three-way valve 550: side tube

Claims (10)

In the medical induction tube including a sheath coupled to a dilator guided by a guide wire for inducing a catheter in a blood vessel of a human body,
The sheath is,
A sheath hub having a path provided therein to selectively insert or receive the dialer along the extending direction of the sheath;
The sealing portion disposed inside the cis hub along the path of the cis hub, and the sealing portion of the cis hub to make a locked state by pressing the sealing portion or move in the opposite direction so as not to compress the sealing portion to create an unlocked state. A push lock having a pusher disposed at the inlet; And
It includes a sheath tube of a flexible material that is connected to the outlet of the cis hub and extends along the extension direction of the cis hub so that it can be adapted and deformed to the blood vessel,
A tapered portion is formed at the end tip of the sheath tube,
The cis hub,
A cone-shaped transition chamber whose diameter gradually decreases in a direction from the inlet of the cis hub toward the outlet of the cis hub among the paths of the cis hub;
A coating unit integrally laminated on the inner surface of the transition chamber unit so as to maintain airtightness by contacting the outer surface of the sealing unit;
A small-diameter chamber part extending along the path of the sheath hub so as to be spatially connected to the upper part of the transition chamber part from the inside of the sheath hub, and formed to have the same size as the inner diameter of the sheath tube;
A large-diameter chamber portion formed to have a relatively large size compared to the small-diameter chamber portion and spacedly connected to a lower portion of the transition chamber portion to accommodate the sealing portion;
A locking groove extending along a circumferential direction from an inner circumferential surface of the large-diameter chamber part; And
Medical induction tube comprising a releasing groove formed on an inner circumferential surface of the large-diameter chamber portion so as to be parallel to the locking groove portion at a spaced position below the locking groove portion.
The method of claim 1,
The cis hub,
A sheath ring portion integrally formed on the outer circumferential surface of the outlet of the sheath hub and having a ring shape to serve as a support base for a surgical thread for mounting the sheath on the skin of the human body; And
It is connected to penetrate the sheath hub along a direction perpendicular to the extension direction of the path of the sheath hub on the outer circumferential surface of the sheath hub spaced apart from the sheath ring part, thereby forming a side tube for a three-way valve and the path of the sheath hub. Medical induction tube including side tube connections to connect to each other in space.
delete delete The method of claim 1,
The sealing portion of the push lock,
A hollow body that may be disposed in the transition chamber part and the large-diameter chamber part and has an inner diameter of a size capable of penetrating the dialer tube of the dialer,
A hemostatic valve disposed separately or integrally formed on the upper part of the hollow body,
A deformed protrusion of a semi-elliptical cross section extending in a circumferential direction along the outer circumferential surface of the hollow body, and
Medical induction tube comprising a skirt part integrally formed at the lower end of the hollow body located opposite to the hemostasis valve.
The method of claim 5,
The pusher of the push lock,
A seating space for accommodating the skirt part or selectively receiving the skirt part and the deformable protrusion,
A locking protrusion formed integrally with the outer circumferential surface of the seating space and extending along the circumferential direction, and having a relatively large rigidity compared to the deformable protrusion,
A through hole spatially connected to the seating space and having a diameter of a size capable of penetrating the dialer tube of the dialer,
A snap ring-shaped stepped portion formed on the inner circumferential surface of the through hole and capable of being fastened to the annular coupling groove portion formed in the dialer, and
Medical guide tube comprising a pressing portion formed on the outer peripheral surface of the pusher to have a diameter relatively larger than the diameter of the locking protrusion.
The method of claim 6,
The pressing portion of the pusher,
When making a locked state by moving the pusher in a forward direction toward the sealing part inside the sheath hub, a bottom of a smooth shape that serves as a support base for the user's finger, and
Medical guide tube comprising an inclined surface that serves as a support base for a user's finger when the pusher is moved in a reverse direction to be released.
The method of claim 7,
The pusher,
Medical induction tube comprising an indication part formed on the outer surface of the pusher or on the outer surface of the sheath hub based on the position between the pressing part and the locking protrusion, and having a color for each French standard.
The method of claim 8,
The pressing portion of the pusher,
A receiving groove portion surrounding the inlet of the sheath hub in a non-contact manner, and
Medical induction tube further comprising a cover portion integrally formed with the pressing portion to form an outer periphery of the receiving groove portion.
The method of claim 1,
The cis hub,
Further comprising a tube support unit, which is a hollow tube structure in a state surrounding a part of the outer circumferential surface of the sheath tube with respect to the outlet of the sheath hub,
The tube support part is connected to the outlet of the sheath hub, and has a color different from the color of the sheath tube or a color according to the French standard of the sheath.

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